.banner-carousel {
  position: relative;
  width: 900px;
  height: 350px;
  margin: 32px auto 0 auto;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
  background: #fff;
}

.banner-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.7);
  border: none;
  font-size: 32px;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  cursor: pointer;
  z-index: 2;
  transition: background 0.2s;
}
.arrow.left { left: 16px; }
.arrow.right { right: 16px; }
.arrow:hover { background: #ff9800; color: #fff; }

.dots {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
}
.dot {
  width: 12px;
  height: 12px;
  background: #eee;
  border-radius: 50%;
  display: inline-block;
  cursor: pointer;
  transition: background 0.2s;
}
.dot.active {
  background: #ff9800;
}
